Difference between revisions of "Trombicula autumnalis"

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*Causes [[Trombiculidiasis|parasitic skin infestation]]
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{{unfinished}}
  
*Also called the harvest mite
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{| cellpadding="10" cellspacing="0" border="1"
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| Also known as:
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| ''The harvest mite''
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|-
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|}
  
*Not host-specific
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Trombicula autumnalis are [[Non-Burrowing Mites|surface mites]]. They cause [[Trombiculidiasis|parasitic skin infestation]] and will parasitise any animal, including humans as they are non-species specific. The mite numbers are highest in late summer in temperate climates and are therefore constant all year in tropical regions.
**Will parasitise any animal, including humans
 
  
*Only the larval stage is parasitic
+
==Identification==
**Nymphal and adult stages are free-living in the soil
 
  
*Mite numbers are highest in late summer in temperate climates
+
The mites are bright orange in colour and hairy. They have six legs and no spiracles. They breath through their cuticle
**Mite numbers are constant all year in tropical regions
 
  
 +
==Lifecycle==
  
'''Recognition'''
+
The lifecycle of Trombicula autumnalis mites lasts around 50 to 70 days. The nymphal and adult stages are free-living in the soil. The female mites become more active in the spring and lay their eggs onto the vegetation. Only the larval stage is parasitic to the host.
*Six legs
 
  
*Bright orange in colour
+
==Pathogenesis==
  
*Hairy
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The larvae insert their mouthparts into the host's skin and inject cytolytic enzymes. They then feed on partly digested host tissue causing irritation and potentially a hypersensitivity reaction.
 +
The Mites are mainly found on the head, ears and flanks of pets and can be found on the face and limbs of grazing animals, depending upon the host height.
  
*No spiracles
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==Control==
**Breath through cuticle
 
  
 +
Trombicula autumnalis mites are very difficult to control. The main method of control is to try to restrict the access of animals to 'hot-spot' areas.
  
'''Pathogenesis'''
+
==Treatment==
*Larvae insert mouthparts into skin and inject cytolytic enzymes
 
  
*Feed on partly digested host tissue
+
Apply Fipronil spray to affected areas.
 
 
*Causes irritation
 
 
 
*Can cause a hypersensitivity reaction
 
 
 
*Mites found on head, ears and flanks of pets
 
 
 
*Mites found on face and limbs of grazing animals (depending upon host height)
 
 
 
 
 
'''Control'''
 
*Very difficult; try to restrict access of animals to 'hot-spot' areas
 
  
 +
[[Category:Non-Burrowing_Mites]]
  
'''Treatment'''
+
[[Category:To_Do_-_AimeeHicks]]
*Fipronil spray applied to affected areas
 
[[Category:Non-Burrowing_Mites]]
 
[[Category:To_Do_-_Parasites]]
 

Revision as of 14:48, 11 July 2010



Also known as: The harvest mite

Trombicula autumnalis are surface mites. They cause parasitic skin infestation and will parasitise any animal, including humans as they are non-species specific. The mite numbers are highest in late summer in temperate climates and are therefore constant all year in tropical regions.

Identification

The mites are bright orange in colour and hairy. They have six legs and no spiracles. They breath through their cuticle

Lifecycle

The lifecycle of Trombicula autumnalis mites lasts around 50 to 70 days. The nymphal and adult stages are free-living in the soil. The female mites become more active in the spring and lay their eggs onto the vegetation. Only the larval stage is parasitic to the host.

Pathogenesis

The larvae insert their mouthparts into the host's skin and inject cytolytic enzymes. They then feed on partly digested host tissue causing irritation and potentially a hypersensitivity reaction. The Mites are mainly found on the head, ears and flanks of pets and can be found on the face and limbs of grazing animals, depending upon the host height.

Control

Trombicula autumnalis mites are very difficult to control. The main method of control is to try to restrict the access of animals to 'hot-spot' areas.

Treatment

Apply Fipronil spray to affected areas.